It might seem as if little has changed for Russia and the United States, two old adversaries seeking to undercut each other around the world.
Russian nuclear-capable missiles have been spotted on the move near Ukraine, and the Kremlin has signaled the possibility of a new intervention there. It has tested hypersonic cruise missiles that skirt American defenses and cut all ties with the American-led NATO alliance. After a summer pause, ransomware attacks emanating from Russian territory have resumed, and in late October, Microsoft revealed a new Russian cybersurveillance campaign.